Leah Remini’s sister Nicole claims that both Katie Holmes and Kirstie Alley wrote “knowledge reports” to the Church of Scientology about the “King of Queens” star after Holmes’ 2006 wedding to Tom Cruise.

In an interview with Scientology blogger Tony Ortega, Nicole recalled how Leah was trying to help her pal Jennifer Lopez change seats so they could sit next to each other.

“She wanted to sit with Leah, and so Leah went to make it happen,” Nicole told the former Village Voice editor. However, a Hollywood agent “took exception to Leah’s request and complained to Katie Holmes and Tom Cruise that Leah was causing a scene.”

“Later, Leah asked other people at the event if she had caused a scene and they said she hadn’t,” said Nicole.

Nicole said that Leah then told another Scientologist friend, Melinda Brownstone, about the incident, who then submitted a report in support of the actress to the church. (Sources explained to Ortega that Brownstone was one of Remini’s best friends until they had an alleged falling out in 2008.)

However, Brownstone’s report led to four people, including Holmes and Alley, writing knowledge reports to the church about Leah and the “incident” at the wedding, Nicole said.

She concluded, “They wrote that Leah was an embarrassment to Scientology. They said she ruined the wedding. All she did was ask to change her seat.”

Yesterday, Scientology bosses fought back following Remini’s announcement she was leaving the church. In a statement obtained exclusively by Page Six, the Church of Scientology said, “We won’t dignify the myths, radio gossip, rumors and off-the-wall tabloid tales that have their origins with self-promoting bloggers living on the fringe of the Internet.”

Alley has also adamantly denied reports that she’s furious at Remini for leaving the Church of Scientology.

Nicole told People magazine that her sister has lost a slew of Scientology friends since her very public break from the church, but she has found support in Lopez, who is not a Scientologist.